They'd more likely split themselves laughing.

The solution to threats to global economic integration is to address the threats to global economic integration. It's not to cannibalise our own full-employment high value economies, by diverting enormous capital and labour into duplicating vast swathes of lower value jobs we don't actually have the work force for anyway, just so we can pay unaffordable prices for the resulting goods.

We probably both agree it's an absurd fantasy, and the people trying to make stuff like this happen are implementing policies that ensure that it won't, such as putting tariffs on the inputs they need to build out this domestic manufacturing capacity in the first place.